KR20190026828A - Reactor - Google Patents

Abstract

The ring-shaped moving holes 2a to 2d are formed in the first supporting member 2 and the holes 4a to 4d are formed in the second supporting member 4. [ The supports 5a to 5d and the bolts 6a to 6d are inserted into the moving holes 2a to 2d and the holes 4a to 4d and the first coil 1 is wound along the moving holes 2a to 2d, . The first coil 1 and the second coil 3 are coiled so that the coil surfaces of the first coil 1 and the second coil 3 become parallel using the supports 5a to 5d, the bolts 6a to 6d and the nuts 7a to 7d. And the second coil 3 are fixed.

Description

Reactor

The present invention relates to a reactor, and is particularly suitable for use in an electric circuit.

Conventionally, there is a great demand to reduce the amount of greenhouse gas emissions such as carbon dioxide to prevent global warming. For example, in the field of steel, it has been realized to operate an induction heating apparatus for high-frequency heating with high efficiency. In addition, the introduction of an induction heating apparatus as an alternative to a gas heating furnace with a poor heating efficiency has been increasing in recent years. Further, in the field of automobiles and logistics, development of a technique of supplying electric power to non-contact as a power supply means to an electric vehicle, a crane or the like to a moving object has been developed.

These common techniques are techniques for generating voltage resonance or current resonance by connecting a capacitor (capacitance C) and a load coil (inductance L) in series or in parallel to a high frequency generator. In these techniques, the object to be heated can be heated in a non-contact manner by the magnetic flux generated when the resonance current flows in the load coil. In these techniques, the electromagnetic induction phenomenon based on the magnetic flux generated when the resonance current flows in the load coil can be used to supply power in a noncontact manner. The resonance current indicates that the frequency is a current of a resonance frequency.

When the resonance phenomenon is used as described above, the frequency (resonance frequency) in the high frequency generator is uniquely determined when the capacitor (capacitance C) and the heating coil / load coil (inductance L) are determined.

In the resonance circuit, the capacitance C, the inductance L, and the resistance R of the load circuit are elements for determining the load impedance. For this reason, it is also necessary to balance the respective values of the electrostatic capacitance C and the inductance L.

Depending on the magnitude of the inductance L of these heating coils and load coils, the operating frequency of the high frequency generator may not be a resonant frequency. In such a case, a reactor for providing a fixed inductance is additionally installed and installed in an electric circuit constituting the high frequency generator in many cases.

As a reactor as an inductance element added to and installed in an electric circuit, there are a hollow core reactor not using a core and a reactor using a core. As technologies related to such reactors, there is a technique described in Patent Documents 1 to 6. [

Patent Document 1 discloses a means for holding and fixing a hollow core reactor as a countermeasure against vibration accompanying the electromagnetic force of the hollow core reactor. Specifically, in the technique described in Patent Document 1, two or more rods are passed through a hollow core reactor. These two or more rods are fixed to the L-shaped support.

Patent Document 2 discloses a means for alleviating an electric field of a high-frequency reactor as a countermeasure against corona discharge generated at a high voltage from a high-frequency reactor using a core. Specifically, in the technique described in Patent Document 2, a core is constituted by a plurality of core blocks arranged in a state of being spaced apart from each other in a vertical direction. The upper end of the core is fixed by a conductive upper fixing plate. The lower end of the core is fixed by a conductive lower fixing plate. The lower fixing plate is connected to the base through an insulator. The distance between the base and the lower fixing plate is made larger than the gap of the core block.

Patent Document 3 discloses a technology for changing the relative position between two coils and adjusting the inductance L as a technique related to a high frequency electronic circuit disposed on a substrate. Specifically, in the technique described in Patent Document 3, two coils of the same shape are used. The rotation angle and the opening and closing angle of the coil are changed by changing the gap of the two coils or by rotating or opening the two coils with the coil end as an axis.

Patent Document 4 discloses a means for realizing a small transformer by using a technique of changing the inductance by changing the area or mutual distance between two inductors disposed on a printed circuit board.

Patent Document 5 discloses a means for expanding the frequency range of an oscillator by switching the series-parallel connection of two inductors integrated in a semiconductor chip.

Patent Document 6 discloses that the shape and position of two inductors deployed on a semiconductor chip are determined so as to reduce EM (electron) coupling between resonators.

Patent Documents 5 and 6 disclose that two inductors are formed of an inductor having an eight-letter shape or an inductor having a shape of a four-leaf clover.

Japanese Patent Application Laid-Open No. 2014-45110 Japanese Patent No. 5649231 Japanese Patent Application Laid-Open No. 58-147107 Japanese Patent Application Laid-Open No. 2014-212198 Japanese Patent No. 5154419 Japanese Patent Publication No. 2007-526642

In the resonance circuit, the necessary inductance is preset from the resonance frequency of the circuit. The inductance of the reactor provided in the resonance circuit is designed and manufactured with a target value set in advance for the resonance circuit.

However, when the reactor is manufactured, the copper tube and the conductor are wound to construct a coil. When manufacturing a reactor having a core, a gap material made of a non-magnetic material is inserted between the core and the core, for example. And a coil is mounted on the core in which the gap member is inserted. Therefore, there is little difference in the value of the inductance realized by the reactor after manufacturing and assembling from the design value.

The inductance of the reactor of the hollow core varies depending on the diameter of the wound coil, the winding radius (equivalent radius), the winding number, the total length, and the magnetic film circumference around the reactor.

The inductance of the reactor having the core is influenced by the gap between the core and the core in addition to the factor affecting the inductance of the hollow core reactor. The inductance of the reactor having the core also changes in frequency, voltage, and current applied to the coil.

In the techniques described in Patent Documents 1 and 2, the inductance of the reactor is fixed. Therefore, it is necessary to adjust the inductance of the reactor as follows. First, the reactor is manufactured and assembled. Subsequently, the inductance of the manufactured / assembled reactor is measured by applying the frequency, voltage, and current required by the specifications to the reactor manufactured and assembled. In general, the inductance of a high-frequency, large-current reactor which is structurally large does not easily fall within the range of the inductance required by a specification due to manufacturing or assembling once. When the inductance of the reactor does not fall within the range of the required inductance, the reactor is disassembled and the reactor is adjusted so as to minimize the deviation between the measured value of the inductance and the target value, and then the inductance is measured again.

Specifically, in order to increase the inductance by the reactor of the hollow core, means such as shortening the entire coil length or increasing the number of windings of the coil is taken. Further, in order to increase the inductance by the reactor having the core, means for reducing the gap between the core and the core, increasing the number of turns of the coil, and the like are taken. In order to make the inductance small, the means opposite to the above-mentioned means for increasing the inductance is adopted.

In addition, it takes time to adjust the inductance of the reactor after manufacture and assembly as described above. In some cases, the inductance of the reactor is adjusted by repeating the manufacturing and assembling of the reactor several times. In such a case, it takes much time to adjust the inductance of the reactor.

Further, when the value of the required inductance is determined in an electric circuit, a reactor having the inductance is designed and manufactured. It is necessary to separately design and manufacture a reactor having an inductance required for the electric circuit in which the inductance is different even if the electric circuit has the same frequency and current as the electric circuit. In this way, it is necessary to design, manufacture, and adjust the reactors suitable for the requirements of the inductance every time or each stage of the inductance.

For example, even if the current specification value is 1000 [A] and the frequency specification value is 20 [kHz], it is necessary to design, manufacture, and adjust the reactor one by one for each different specification value if the inductance is different specification value have.

Therefore, there is a technique described in Patent Documents 3 and 4 as a technique relating to a reactor in which the inductance is variable. However, the technique described in Patent Document 3 is a technique related to a high-frequency electronic circuit used on a printed circuit board. Therefore, it is not easy to flow a large current to the high-frequency electronic circuit. Also, the technique described in Patent Document 4 is based on a spiral inductor used in the IC. Therefore, it is not easy to flow a large current to the IC. In addition, in all of the techniques described in Patent Documents 3 and 4, the adjustment range of the inductance is limited.

The technology described in Patent Documents 5 and 6 is a technology related to an inductor manufactured on a semiconductor chip that handles minute currents. Further, in the technology described in Patent Documents 5 and 6, if the inductor is manufactured, the inductance can not be adjusted later. Thus, time and cost can not be avoided when a change in inductance is required after the design stage or manufacture of the inductor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a reactor in which the inductance can be changed easily in a wide variety of specifications.

A reactor according to the present invention is a reactor having variable inductance as a constant of an electric circuit and includes a first main portion, a second main portion, a first coil having a first connecting portion, a third main portion, A second coil having a second connection portion, a first support member for supporting the first coil, a second support member for supporting the second coil, and a second coil for holding the first coil and the second coil Wherein the first main portion, the second main portion, the third main portion, and the fourth main portion are each a portion that circulates around the inner region thereof, And the second connecting portion connects the one end of the third main takeout portion and the one end of the fourth main takeout portion to each other Wherein the first coil and the second coil are connected in series or in parallel, Wherein the first main portion and the second main portion are on the same plane and the third main portion and the fourth main portion are on the same plane and the first main portion and the second main portion, The fourth main portion is arranged in parallel with a gap, and either or both of the first coil and the second coil pivot about the axis of the first coil and the second coil, And the axis is located between the center of the first main turning part and the center of the second main turning part and the center of the third main turning part and the center of the third main turning part, And the holding member is arranged so that the first main portion and the second main portion and the third main portion and the fourth main portion are parallel to each other with a gap therebetween And the amount of the rotation and the parallel movement Or one is characterized by consisting of one or a plurality of members so as not to perform is performed the first coil and the second coil movement.

1 is a view showing an example of the configuration of a reactor according to the first embodiment.
2A is a diagram showing an example of a configuration of a first coil and a first support member in the first embodiment.
2B is a view showing an example of the configuration of the second coil and the second support member in the first embodiment.
FIG. 3A is a diagram showing a first coil in a certain state and a first coil in a state rotated by 180 [deg.] From this state in a superimposed manner. FIG.
Fig. 3B is a diagram showing a second coil in a certain state and a second coil rotated 180 [deg.] From the state in a superimposed manner. Fig.
4 is a diagram showing an example of the positional relationship between the first coil and the second coil in the first embodiment.
5A is a diagram showing a first example of directions of magnetic fluxes generated in the first coil and the second coil of the first embodiment, together with circuit symbols of the first coil and the second coil.
5B is a diagram showing a second example of the direction of the magnetic fluxes generated in the first coil and the second coil of the first embodiment, together with circuit symbols of the first coil and the second coil.
6A is a diagram showing a first example of the magnetic fluxes generated in the first coil and the second coil of the first embodiment together with the first coil and the second coil in a state in which they are arranged in the reactor.
6B is a view showing a second example of the magnetic fluxes generated in the first coil and the second coil of the first embodiment together with the first coil and the second coil in a state in which they are arranged in the reactor.
7 is a view for explaining an example of a method of adjusting the positional relationship between the first coil and the second coil in the first embodiment.
8A is a view showing a modified example of the moving hole according to the first embodiment.
8B is a view for explaining a modification of the method of adjusting the positional relationship between the first coil and the second coil in the first embodiment.
9 is a view showing a modified example of the reactor of the first embodiment.
10A is a view showing a first modification of the configuration of the first coil and the first support member in the first embodiment.
10B is a view showing a first modification of the configuration of the second coil and the second support member of the first embodiment.
11A is a diagram showing a second modification of the configuration of the first coil and the first support member in the first embodiment.
11B is a view showing a second modification of the configuration of the second coil and the second support member of the first embodiment.
12A is a view showing an example of the configuration of the first coil and the first support member in the second embodiment.
Fig. 12B is a diagram showing an example of the configuration of the second coil and the second support member in the second embodiment. Fig.
13 is a diagram showing an example of the positional relationship between the first coil and the second coil in the second embodiment.
Fig. 14 is a view showing an example of the configuration of the first coil and the first support member in the third embodiment. Fig.
Fig. 15 is a diagram showing a first example of the configuration of the reactor of the fourth embodiment. Fig.
16A is a diagram showing a first example of the configuration of the first coil and the first support member in the fourth embodiment.
16B is a view showing a first example of the configuration of the second coil and the second support member in the fourth embodiment.
17 is a diagram showing a second example of the configuration of the reactor of the fourth embodiment.
18A is a diagram showing a second example of the configuration of the first coil and the first support member in the fourth embodiment.
Fig. 18B is a view showing a second example of the configuration of the second coil and the second support member in the fourth embodiment. Fig.
19A is a diagram showing an example of the configuration of the first coil and the first support member in the fifth embodiment.
Fig. 19B is a view showing an example of the configuration of the second coil and the second support member in the fifth embodiment. Fig.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)

First, the first embodiment will be described.

<Configuration of Reactor>

1 is a diagram showing an example of the configuration of a reactor of the present embodiment. The X, Y and Z coordinates shown in the respective drawings show the relationship of the directions in the respective drawings. ○ indicates the direction from the inside to the front of the paper. ○ Indicated in × indicates the direction from the front of the ground to the inside.

Fig. 1 is a view showing a structure of a reactor of the present embodiment. 2A is a diagram showing an example of the configuration of the first coil 1 and the first support member 2. Fig. Fig. 2B is a view showing an example of the configuration of the second coil 3 and the second support member 4. Fig. Fig. 3A is a diagram showing a first coil 1 in a certain state and a first coil 1 rotated 180 [deg.] From this state in a superimposed manner. 3A, one of the two first coils 1 is indicated by a solid line and the other is indicated by a broken line for the convenience of the description. Fig. 3B is a diagram showing a state in which the second coil 3 in a certain state is overlapped with the second coil 3 rotated 180 [deg.] From this state. In Fig. 3B, similarly to Fig. 3A, one of the two second coils 3 is indicated by a solid line and the other is indicated by a broken line for the convenience of notation. It is also assumed that the second coil 3 does not rotate as will be described later, but the second coil 3 rotates in Fig. 3B.

FIG. 2A and FIG. 3A are views showing the surface of the first support member 2 facing the second support member 4, taken along the Z-axis in FIG. Fig. 2B and Fig. 3B are views of the surface of the second support member 4, which faces the first support member 2, along the Z-axis in Fig.

The reactor of the present embodiment is a reactor having variable inductance as a constant of an electric circuit. 1, 2A and 2B, a reactor according to the present embodiment includes a first coil 1, a first support member 2, a second coil 3, a second support member 4, Supports 5a to 5d, bolts 6a to 6d, and nuts 7a to 7b. The nut for the bolts 6c and 6d is also disposed in the same manner as the nuts 7a and 7b for the bolts 6a and 6b. Hereinafter, the nut for the bolts 6c and 6d will be referred to as nuts 7c and 7d, though not shown, for convenience of explanation.

First, the first coil 1 and the first support member 2 will be described.

The first support member (2) is a member for supporting the first coil (1). The first coil 1 is fixed to the first supporting member 2. The holes 2e and 2f are holes for drawing out the first coil 1 to the outside.

The first support member 2 and the second support member 4 described later are supported by the supports 5a to 5d so that the gap G between the first coil 1 and the second coil 3, And fixed to the bolts 6a to 6d and the nuts 7a to 7d. 2A, the first supporting member 2 is provided with the moving holes 2a to 2d for mounting the first supporting member 2 on the second supporting member 4. [ The moving holes 2a to 2d are holes for enabling the first supporting member 2 provided on the second supporting member 4 to rotate.

In the present embodiment, the planar shape of the moving holes 2a to 2d is an arc shape. The moving holes 2a and 2d are arranged along the arc of the first imaginary circle. The moving holes 2b and 2c are located on the center side of the first supporting member 2 with respect to the moving holes 2a and 2d. The moving holes 2b and 2c are arranged so as to follow the arc of the second virtual circle which is smaller in radius than the first virtual circle and concentric with the first virtual circle. The first coils 1 are configured so that the supports 5a to 5d and the bolts 6a to 6d are passed through the moving holes 2a to 2d shown in Figure 2a and the supports 5a to 5d and the bolts 6a 6d can be pivoted even when the positions of the first to sixth positions are fixed. By using the nuts 7a to 7d after the position of the first coil 1 is determined by rotating the first coil 1, the first coil 1 is fixed at that position and does not rotate. In the present embodiment, the axis (pivot axis) of the first coil 1 passes through the center 2g of the first support member 2 and extends in the direction Z perpendicular to the plane of the first support member 2 Axis direction).

As shown in Fig. 2A, the plane shape of the first support member 2 is square. The first supporting member 2 is made of a material having a strength capable of supporting the first coil 1 so that the position of the first coil 1 in the Z axis direction does not change, . However, the plane shape of the support member 2 of the first coil 1 is not limited to a square. The planar shape of the support member 2 of the first coil 1 may be, for example, a rectangular shape or a circular shape. The first supporting member 2 is formed using, for example, a glass laminated epoxy resin, a thermosetting resin, or the like.

2A, the first coil 1 includes a first main portion 1a, a second main portion 1b, a first connection portion 1c, a first lead portion 1d, And has a lead portion 1e. The first main portion 1a, the second main portion 1b, the first connection portion 1c, the first lead portion 1d, and the second lead portion 1e are integrally formed.

In the present embodiment, the number of windings of the first coil 1 is 1 [times]. In the present embodiment, a description will be given taking as an example the case where the first main portion 1a, the second main portion 1b, and the first connection portion 1c form an eight-figured figure of Arabic numerals. 3A, the illustration of the first lead portion 1d and the second lead portion 1e is omitted for the sake of descriptive convenience. In Fig. 3A, the two first coils 1 are indicated by the same reference numerals.

The first main portion 1a is a portion which circles around the inner region. The second main take-over portion 1b is also a portion that circles around the inner main portion. The first main portion 1a and the second main portion 1b are arranged on the same horizontal plane (X-Y plane). The first main portion 1a and the second main portion 1b do not have to be arranged on exactly the same horizontal plane and can be said to be arranged on the same horizontal plane if they are within the tolerance range of design . The same is true for the &quot; same horizontal surface &quot; in the following description.

The first connecting portion 1c is a portion connecting the first end 1f of the first main portion 1a and the first end 1g of the second main portion 1b and is a portion that does not circulate .

The first lead portion 1d is connected to the second end 1h of the first main portion 1a. The second end 1h of the first main portion 1a is at the position of the hole 2e. The second lead portion 1e is connected to the second end 1i of the second main lead portion 1b. The second end 1i of the second main portion 1b is at the position of the hole 2f.

The first lead portion 1d and the second lead portion 1e serve as lead wires for connecting the first coil 1 to the outside. 2A, the first draw-out portion 1d and the second draw-out portion 1e are indicated by broken lines, because the first draw-out portion 1d and the second draw- 1 is on a surface opposite to the surface of the support member 2. [

In Fig. 3A, when the first coil 1 is turned by 180 [deg.] From the state shown by the solid line, it becomes a state shown by the broken line.

2A, the center 2g (pivot axis) of the first support member 2 is located between the center 1k of the first main portion 1a and the center 1k of the second main portion 1b 1j. The first main portion 1a and the second main portion 1b are located on opposite sides through the center 2g of the first support member 2 (the pivot axis of the first coil 1). That is, the first main portion 1a and the second main portion 1b are arranged so as to maintain a state in which the angle in the direction in which the first coil 1 rotates is deviated by 180 [deg.]. This angle is defined by a virtual straight line connecting the center 2g of the first support member 2 (pivot axis) and the center 1k of the first main portion 1a at the shortest distance from each other, Is an angle formed by a hypothetical straight line connecting the center 2g of the first main section 1 and the center 1j of the second main section 1b at the shortest distance from each other. 2A, the center 2g of the first support member 2, the center 1k of the first main portion 1a, and the center 1j of the second main portion 1b are arranged in a virtual And is not a real point.

The shape and size of the first main portion 1a, the second main portion 1b, the third main portion 3a, and the fourth main portion 3b are most preferably the same. 2A and 2B, the shapes and sizes of the first main portion 1a, the second main portion 1b, the third main portion 3a, and the fourth main portion 3b are set to be There are cases where it can not be completely the same.

When the alternating current is caused to flow through the first coil 1 and the second coil 3, the first main portion 1a, the second main portion 1b, the third main portion 3a, The shape of the magnetic flux passing through the inside of each of the first main flux portion 3b and the second main flux portion 3b is different from the shape and size of the first main flux portion 1a, the second main flux portion 1b, the third main flux portion 3a and the fourth main flux portion 3b, The shape and size of the first main portion 1a, the second main portion 1b, the third main portion 3a and the fourth main portion 3b are not completely the same do.

The present inventors have found that, with respect to various reactors including the reactors of the first to fifth embodiments, the sizes of the first and second coils, the gaps (intervals in the Z-axis direction) of the first and second coils, The shape of the coil and the second coil were changed, and the variable magnification? Defined by the following formula (2) was measured. However, the shape and size of the first main portion, the second main portion, the third main portion, and the fourth main portion were made exactly the same. As a result, the range of the variable magnification? Was about 2.3 to 5.6 times. The range of the coupling coefficient k corresponding to this range is about 0.4 to 0.7. The coupling coefficient k is expressed by the following equation (1).

M = 占 √ (L1 占 L2) ... (One)

Here, M is a mutual inductance of the first coil 1 and the second coil 3. L 1 is the magnetic inductance of the first coil 1. L2 is the magnetic inductance of the second coil 3; The coupling coefficient k is determined by the shape, size, and relative position of the first coil 1 and the second coil 3, and has a relationship of 0? K? 1. k = 1 is the case where there is no leakage magnetic flux, but the coupling coefficient k is less than 1 because leakage magnetic flux actually occurs.

Therefore, as the value of the standard coupling coefficient ks between the first coil and the second coil, an average value (= 0.55 (= (0.4 + 0.7) divided by 2) of this range is adopted. This standard coupling coefficient ks is a representative value of the coupling coefficient when the shapes and sizes of the first main portion, the second main portion, the third main portion, and the fourth main portion are completely equal.

Here, it is assumed that the minimum value? Min of the variable magnification? Viewed from the AC power supply circuit of the composite inductance GL is 2.0. The variable magnification? Viewed from the AC power source circuit of the composite inductance GL is expressed by the following formula (2). The composite inductance GL is an inductance synthesized by the connection of the first coil 1 and the second coil 3 and is an inductance evaluated from the AC power supply circuit side.

? = (2L + 2M) / 2L-2M = (2L + 2kL) 2L-2kL = ... (2)

Here, for simplicity of explanation, the magnetic inductances L1 and L2 of the first coil 1 and the second coil 3 are set to L (L1 = L2 = L).

When the minimum value? Min (= 2.0) of the variable magnification? Is substituted into the formula (2), the minimum value kmin of the coupling coefficient between the first coil and the second coil becomes about 0.33. If the lowest value of the coupling coefficient kmin (= 0.33) is divided by the standard coupling coefficient ks (= 0.55), then 0.6 (= 0.33 / 0.55). That is, in order to secure the minimum value? Min (= 2.0) of the variable magnification?, 0.33 is required as the minimum value kmin of the coupling coefficient. In order to realize 0.33 as the minimum value kmin of the coupling coefficient, the shapes and sizes of the first main portion, the second main portion, the third main portion and the fourth main portion are the same in the portion of 60% of the total length . In practice, the minimum value? Min of the variable magnification? Is preferably 2.5, more preferably 3.0. In order to cope with this, the shape and size of the first main portion, the second main portion, the third main portion and the fourth main portion are 78 [%] of the total length from the result of the calculation similar to the above- , And it is more preferable to be the same in the region of 91 [%] or more.

In view of the above, the shape and size of the first main portion 1a, the second main portion 1b, the third main portion 3a and the fourth main portion 3b are preferably 60% The shapes and sizes of the first main portion 1a, the second main portion 1b, the third main portion 3a and the fourth main portion 3b can be regarded as being the same. However, in the above description, it is preferable that 60 [%] is 78 [%] and more preferably 91 [%] according to the minimum value? Min of the variable magnification?.

In this respect, the following can be said regarding the shape and size of the first main portion 1a and the second main portion 1b.

When the first coil 1 rotates by 180 [deg.], A portion having a length of 60 [%] or more of the total length of the first main portion 1a is divided into a region having the second main portion 1b . The total length of the first main portion 1a is the length from the first end 1f to the second end 1h of the first main portion 1a.

3A, when the state shown by the solid line is changed to the state shown by the broken line, the portion having the length of 60% or more of the total length of the first main portion 1a shown by the broken line in FIG. And is overlapped with the second main take-over portion 1b shown at the lower side.

When the first coil 1 rotates 180 [deg.], The portion of the length longer than the total length 60 [%] of the second main portion 1b is shorter than the length of the first main portion 1a Overlapping regions. The total length of the second main portion 1b is the length from the first end 1g to the second end 1i of the second main portion 1b.

3A, when the state shown by the solid line is changed to the state shown by the broken line, the portion of the length of 60% or more of the total length of the second main portion 1b indicated by the broken line in Fig. And overlaps the first main portion 1a shown on the upper side.

As described above, according to the above description, it is preferable that 60 [%] is 78 [%] and more preferably 91 [%] according to the minimum value? Min of the variable magnification?.

Next, the second coil 3 and the second support member 4 will be described.

The second support member (4) is a member for supporting the second coil (3). The second coil 3 is fixed to the second support member 4. 2B, the second support member 4 is formed with holes 4a to 4d for allowing the first support member 2 to be mounted on the second support member 4. As shown in Fig. The holes 4a to 4d are formed by fixing the first and second support members 2 and 4 using the supports 5a to 5d, the bolts 6a to 6d and the nuts 7a to 7d It is a hole for. The diameters of the holes 4a to 4d are slightly larger than the outer diameters of the bolts 6a to 6d. The holes 4e and 4f are holes for drawing out the second coil 3 to the outside. The first supporting member 2 and the second supporting member 4 are supported by the supports 5a, 5b, 5c and 5d and the bolts 6a, 6b, 6c and 6d, respectively, in the holes 4a, 4b, 4c and 4d, And the positions of the supports 5a to 5d and the bolts 6a to 6d are fixed and the nut 7a to 7d are fastened together. In the present embodiment, the supports 5a to 5d, the bolts 6a to 6d, and the nuts 7a to 7d function as holding members. In the present embodiment, in the state where the first main portion 1a and the second main portion 1b and the third main portion 3a and the fourth main portion 3b are spaced apart and parallel to each other, A first support member 2 to which the first coil 1 is fixed and a second support member 4 to which the second coil 3 is fixed so that the first coil 1 whose position is adjusted by the rotation is not moved, Lt; / RTI &gt;

As shown in Fig. 2B, the plane shape of the second support member 4 is square. However, the plane shape of the support member 2 of the second coil 4 is not limited to a square. The planar shape of the support member 2 of the second coil 4 may be, for example, a rectangular shape or a circular shape. The second support member 4 is made of a material having a strength capable of supporting the second coil 3 so as to prevent the position of the second coil 3 from changing in the Z axis direction, . The second supporting member 4 is formed using, for example, a glass laminated epoxy resin, a thermosetting resin or the like.

2B, the second coil 3 includes a third main portion 3a, a fourth main portion 3b, a second connecting portion 3c, a third lead portion 3d, Out portion 3e. The third main portion 3a, the fourth main portion 3b, the second connection portion 3c, the third lead portion 3d, and the fourth lead portion 3e are integrally formed.

In the present embodiment, the number of windings of the second coil 3 is 1 [times]. In this embodiment, an example in which an eight-figured Arabic numerals are formed by the third main portion 3a, the fourth main portion 3b, and the second connection portion 3c will be described as an example. In Fig. 3B, for convenience of illustration, illustration of the third lead portion 3d and the fourth lead portion 3e is omitted. In Fig. 3B, the two second coils 3 are indicated by the same reference numerals.

The third main portion 3a is a portion that circulates around the inner region. The fourth main take-over portion 3b is also a portion that circulates around the inner region. The third main portion 3a and the fourth main portion 3b are arranged on the same horizontal plane (X-Y plane).

The second connecting portion 3c is a portion that connects the first end 3f of the third main portion 3a and the first end 3g of the fourth main portion 3b and is a portion that does not circulate .

The third lead portion 3d is connected to the second end 3h of the third main portion 3a. The second end 3h of the third main portion 3a is at the position of the hole 4e. The fourth lead portion 3e is connected to the second end 3i of the fourth main portion 3b. The second end 3i of the fourth main portion 3b is at the position of the hole 4f.

The third lead portion 3d and the fourth lead portion 3e serve as lead wires for connecting the second coil 3 to the outside. 2B, the third draw-out portion 3d and the fourth draw-out portion 3e are indicated by broken lines, because the third draw-out portion 3d and the fourth draw- 2 is on the opposite side of the surface of the support member 4. [

As described above, in the present embodiment, the second coil 3 does not rotate. However, in Fig. 3B, it is assumed that the second coil 3 rotates. Then, the second coil 3 rotates by 180 [deg.] From the state shown by the solid line, and becomes the state shown by the broken line. The axis of the second coil 3 (pivotal axis) in the case where the second coil 3 is assumed to rotate will pass through the center 4g of the second support member 4 and will pass through the second support member 4, (Z-axis direction) (see Fig. 2B).

The center 4g of the second support member 4 rotates about the center 3j of the third main portion 3a and the center 4j of the fourth main portion 3b as shown in FIG. 3k. &Lt; / RTI &gt; The third main portion 3a and the fourth main portion 3b are located on opposite sides through the center 4g of the second support member 4 (the pivot axis of the second coil 3). That is, the third main portion 3a and the fourth main portion 3b are arranged so as to maintain a state in which the angle in the direction in which the first coil 1 rotates is deviated by 180 [deg.]. This angle is defined by a hypothetical straight line connecting the center 4g of the second support member 4 (pivot axis) and the center 3j of the third main portion 3a at the shortest distance from each other, Is an angle formed by a hypothetical straight line connecting the center 4g (pivot axis) of the fourth main portion 3 and the center 3k of the fourth main portion 3b at the shortest distance from each other. 2B, the center 4g of the second support member 4, the center 3j of the third main portion 3a, and the center 3k of the fourth main portion 3b are imaginary And is not a real point.

In addition, regarding the shape and size of the third main portion 3a and the fourth main portion 3b, the following can be said.

The portion of the length of 60% or more of the total length of the third main portion 3a is set to be larger than the length of the fourth main portion 3b before the rotation, assuming that the second coil 3 rotates by 180 [ And overlaps the area where it was. The total length of the third main portion 3a is the length from the first end 3f to the second end 3h of the third main portion 3a.

3B, it is assumed that a portion having a length of 60% or more of the total length of the third main portion 3a shown by the broken line in Fig. And overlaps with the fourth main portion 3b indicated by the solid line.

Further, when it is assumed that the second coil 3 rotates by 180 [deg.], A portion having a length of 60 [%] or more of the total length of the fourth main portion 3b is divided by the third main portion 3a ). The total length of the fourth main portion 3b is the length from the first end 3g to the second end 3i of the fourth main portion 3b.

3B, the portion of the length of 60% or more of the total length of the fourth main portion 3b shown by the broken line in FIG. 3B is set to be a solid line, And overlaps with the third main portion 3a shown at the lower side.

Further, in the above description, it is preferable that 60 [%] is 78 [%] and more preferably 91 [%] according to the minimum value? Min of the variable magnification?.

Next, a method of installing the first coil 1 and the second coil 3 will be described.

As shown in Figs. 1, 2A, and 2B, between the first support member 2 and the second support member 4, a Z-axis of the first coil 1 and the second coil 3 Supports 5a to 5d are provided so that the positions of the directions do not change. The shapes and sizes of the supports 5a to 5d are the same. In the present embodiment, the supports 5a to 5d have a hollow cylindrical shape. After the one end portion of the supports 5a, 5b, 5c and 5d is inserted into the moving holes 2a, 2b, 2c and 2d and the other end portion is inserted into the holes 4a, 4b, 4c and 4d, Bolts 6a, 6b, 6c, and 6d pass through hollow portions of the first, second, third, fourth, fifth, fifth, fifth, At this time, the bolts 6a, 6b, 6c and 6d are inserted into the holes 4a, 4b, 4c and 4d and the moving holes 2a, 2b, 2c and 2d from the upper side in Fig. 1, the tips of the bolts 6a, 6b, 6c, and 6d are projected downward (in the Z-axis direction) of the second support member 4. [ The bolts 6a, 6b, 6c, and 6d and the nuts 7a, 7b, 7c, and 7d are provided with the nuts 7a, 7b, 7c, and 7d on the portions where the bolts 6a, 5b, 5c, 5d are fixed to the first supporting member 2, the second supporting member 4 and the supports 5a, 5b, 5c, In this way, relative positioning of the first support member 2 and the second support member 4 is performed, and the relative positional relationship between the two support members 2, 4 is fixed. The supports 5a to 5d, the bolts 6a to 6d and the nuts 7a to 7d have a strength capable of relative positioning of the first support member 2 and the second support member 4 , And is formed of a material having an insulating property and a non-magnetic property.

As described above, the first coil 1 and the second coil 3 are arranged so that their coil surfaces are parallel to each other with a constant gap G (see Fig. 1). The size of the gap G can be set to be larger than a value determined by the insulation distance between the first coil 1 and the second coil 3, and the like. Also, parallelism may not be strictly parallel, and may be parallel if, for example, within the limits of design tolerance. This also applies to &quot; parallel &quot; in the following description. The coil surface of the first coil 1 is a horizontal plane (X-Y plane) in a region surrounded by the first main section 1a and the second main section 1b. The coil surface of the second coil 3 is a horizontal plane (X-Y plane) in a region surrounded by the third main portion 3a and the fourth main portion 3b.

2A and 2B) in which the projection plane of the first coil 1 to the second coil 3 and the projection plane of the second coil 3 to the first coil 1 overlap with each other, 2B) is set as the design origin. In the present embodiment, the first coil 1 can be rotated with its coil face kept parallel to the coil face of the second coil 3 with reference to this design origin.

At least the supports 5a to 5d and the first and second coils 5a to 5d are fixed with the bolts 6a to 6d and the nuts 7a to 7d without fixing the first coil 1 and the second coil 3 through the supports 5a to 5d, The bolts 6a to 6d are mounted on the first supporting member 2 and the second supporting member 4, respectively. The moving hole 2a is coaxial with the rotating shaft of the first coil 1 and has a size and shape capable of rotating the supports 5a to 5d and the bolts 6a to 6d. Therefore, in a state in which the first coil 1 and the second coil 3 are not fixed via the supports 5a to 5d with the bolts 6a to 6d and the nuts 7a to 7d, at least the supports 5a to 5d And the bolts 6a to 6d are provided on the first and second support members 2 and 4 to rotate the first support member 2 along the movement holes 2a to 2d, 1 The position of the support member 2 can be adjusted. In this adjusted position, the first coil 1 and the second coil 3 are fixed via the supports 5a to 5d with the bolts 6a to 6d and the nuts 7a to 7d.

Thereafter, the first coil 1 and the second coil 3 are connected to the first lead portion 1d, the second lead portion 1e, the third lead portion 3d, the fourth lead portion 3e, To an AC power supply circuit (not shown), and is configured as one reactor.

2A and 2B, the arrow lines shown in the first coil 1 and the second coil 3 are directions of the alternating current at the same time. The direction of the alternating current flowing through the first coil 1 and the second coil 3 will be described later with reference to Fig.

Next, the positional relationship between the first coil 1 and the second coil 3 will be described.

4 is a diagram showing an example of the positional relationship between the first coil 1 and the second coil 3. As shown in Fig. 4 is a view showing the first coil 1 and the second coil 3 at the same time from the same direction as in Fig. 2B. 4 shows a state in which the first coil 1 and the second coil 3 are simultaneously viewed from the opposite side of the mounting surface of the first coil 1 of the support member 2 of the first coil 1 It is the drawing to be seen.

The uppermost portion of Fig. 4 shows the arrangement of the first coil 1 and the second coil 3 when the composite inductance GL becomes the minimum value. 4 shows the arrangement of the first coil 1 and the second coil 3 when the synthetic inductance GL becomes the maximum value. 4 shows the arrangement of the first coil 1 and the second coil 3 when the synthetic inductance GL becomes an intermediate value (a value exceeding the minimum value and being less than the maximum value).

In Fig. 4, the first coil 1 is indicated by a solid line and the second coil 3 is indicated by a broken line for the convenience of the description. 4, solid lines and broken line arrows indicate the directions of the alternating currents flowing in the first coil 1 and the second coil 3 (when viewed in the same direction at the same time) .

4, the first coil 1 is rotated to move from the design origin (the state shown at the bottom of FIG. 4).

The state shown at the bottom of Fig. 4 is referred to as a first state. The state shown at the top in Fig. 4 is referred to as a second state.

4, the first state is a state in which the first main portion 1a of the first coil 1 and the third main portion 3a of the second coil 3 are opposed to each other And the second main turning portion 1b of the first coil 1 and the fourth main turning portion 3b of the second coil 3 are in positions facing each other.

4, the second state is a position where the first main portion 1a of the first coil 1 and the fourth main portion 3b of the second coil 3 are opposed to each other And the second main turning portion 1b of the first coil 1 and the third main turning portion 3a of the second coil 3 are in positions facing each other.

The shape and size of the first main portion 1a and the second main portion 1b and the shapes and sizes of the third main portion 3a and the fourth main portion 3b are as follows .

When the first coil 1 and the second coil 3 are viewed in the direction along the center axis (Z-axis direction) in the first state shown at the bottom of Fig. 4, A portion having a length of 60% or more of the total length and a portion having a length of 60% or more of the total length of the third main portion 3a are overlapped with each other. When the first coil 1 and the second coil 3 are viewed in the direction along the central axis (Z-axis direction) in the first state, the total length of the second main portion 1b is 60% And the portion of the length longer than 60 [%] of the total length of the fourth main portion 3b are overlapped with each other.

(Z-axis direction) along the central axis of the first coil 1 and the second coil 3 in the second state shown in the topmost part of Fig. 4, the entire length of the first main portion 1a Of the total length of the fourth main portion 3b and a length of 60% or more of the total length of the fourth main portion 3b overlap each other. When the first coil 1 and the second coil 3 are viewed in the direction along the center axis (Z-axis direction) in the second state, the total length of the second main portion 1b is 60 [%] And the portion of the length longer than 60 [%] of the total length of the third main portion 3a are overlapped with each other.

Further, in the above description, it is preferable that 60 [%] is 78 [%] and more preferably 91 [%] according to the minimum value? Min of the variable magnification?.

The lengths of the first connecting portion 1c and the second connecting portion 3c are set such that the lengths of the first main portion 1a, the second main portion 1b, the third main portion 3a, and the fourth main portion 3b ). Therefore, the first coil 1 (the first main portion 1a, the second main portion 1b and the first connection portion 1c) and the second coil 3 (the third main portion 3a, (Preferably, 78 [%] or more, and more preferably 91 [%] or more) of the total length of the main portion 3b and the second connection portion 3c) There is no substantial difference.

Therefore, in the above description, instead of the shapes and sizes of the first main portion 1a, the second main portion 1b, the third main portion 3a, and the fourth main portion 3b, (The first main portion 1a, the second main portion 1b and the first connection portion 1c) and the second coil 3 (the third main portion 3a and the fourth main portion 3b) And the second connection portion 3c) may be the same as those described above.

Next, an example of a method of adjusting the inductance of the reactor will be described with reference to Figs. 4, 5A, 5B, 6A, and 6B. The inductance of the reactor is the above-described synthetic inductance GL.

5A, 5B, 6A and 6B are diagrams showing examples of directions of magnetic fluxes generated by flowing an alternating current in the first coil 1 and the second coil 3. 5A and 5B show the direction of the magnetic flux along with the circuit symbols representing the first coil 1 and the second coil 3. [ 6A and 6B show the direction of the magnetic flux together with the first coil 1 and the second coil 3 in a state where they are constituted and arranged as reactors.

Figs. 5A and 6A are diagrams showing the directions of the magnetic flux when the composite inductance GL becomes the minimum value. Fig. 5B and 6B are diagrams showing the directions of the magnetic fluxes when the composite inductance GL becomes the maximum value. 5A and 5B, the arrows attached to the first coil 1 and the second coil 3 indicate the direction of the alternating current, and arrows passing through the first coil 1 and the second coil 3 The line indicates the direction of the magnetic flux. In Figs. 6A and 6B, the symbols &amp; cir &amp;, &amp; cir &amp; in the circles indicate the direction of the alternating current. ○ indicates the direction toward the front from the inside of the paper, and ○ indicates the direction from the front to the inside of the paper. 6A, and the loops indicated by the solid lines together with the arrows in Fig. 6B indicate the direction of the magnetic flux.

The first main portion 1a of the first coil 1 and the fourth main portion 3b of the second coil 3 are opposed to each other and the first coil 1 1 of the second coil 3 and the third main portion 3a of the second coil 3 are opposed to each other. The direction of the alternating current flowing in the first main portion 1a of the first coil 1 and the second main portion 3b of the second coil 3 in the direction of the same direction Are opposite to each other. Likewise, the direction of the alternating current flowing in the second main turn 1b of the first coil 1 and the third main turn 3a of the second coil 3 (in the same direction at the same time) Are opposite to each other.

Therefore, as shown in Fig. 5A, the magnetic fluxes generated from the first coil 1 and the second coil 3 weaken each other. The composite inductance GL in this case is expressed by the following formula (3).

GL = L1 + L2-2M ... (3)

The composite inductance GL expressed by the equation (3) becomes the minimum value of the combined inductance GL of the reactor.

At this time, the magnetic flux generated by flowing an alternating current to the first coil 1 and the second coil 3 is shown in Fig. 6A.

The first state shown at the bottom of Fig. 4 is a state in which the first coil is rotated by 180 [deg.] From the second state shown at the top of Fig. In this first state, the first main portion 1a of the first coil 1 and the third main portion 3a of the second coil 3 are opposed to each other, and the second main portion 1a of the first coil 1, The turning portion 1b and the fourth main turning portion 3b of the second coil 3 are opposed to each other. The direction of the alternating current flowing in the first main portion 1a of the first coil 1 and the third main portion 3a of the second coil 3 in the direction of the same direction Are in the same direction. Similarly, the direction of the alternating current flowing in the second main turn 1b of the first coil 1 and the fourth main turn 3b of the second coil 3 (in the same direction at the same time) Are the same.

Therefore, as shown in Fig. 5B, the magnetic fluxes generated from the first coil 1 and the second coil 3 are strengthened with each other. The composite inductance GL in this case is expressed by the following formula (4).

GL = L1 + L2 + 2M ... (4)

The synthetic inductance expressed by the formula (4) becomes the maximum value of the synthetic inductance GL. At this time, the magnetic flux generated by flowing an alternating current through the first coil 1 and the second coil 3 is shown in Fig. 6B.

As described above, when the first coil 1 is rotated 180 [deg.] From the second state shown at the top of Fig. 4, the first state shown at the bottom of Fig. 4 is obtained. The first coil 1 and the second coil 3 are located at positions relatively rotated with respect to the second coil 3 so that the alternating current flowing in the first coil 1 and the second coil 3 Can be made to be in the same direction or in the opposite direction. Therefore, when the position of the first coil 1 in the first state shown at the bottom of Fig. 4 is set to 0 [deg.], The first coil 1 is held within the range of 0 [deg.] To 180 [ And the first coil 1 is rotated and fixed to the position, it is possible to set and fix the composite inductance GL to almost any one of the range from the minimum value to the maximum value.

Specifically, as shown in the center of Fig. 4, when the first coil 1 is rotated and fixed to the middle between 0 [deg.] And 180 [deg.], The coil surface of the first coil 1 and the coil surface of the second The magnetic flux generated by the direction of the magnetic flux generated by the current flowing through the first coil 1 and the current flowing through the second coil 3 in the portion (surface 1) of the coil surface of the coil 3, Are strengthened with each other. On the other hand, in the portion indicated by (surface 2), the direction of the magnetic flux generated by the current flowing through the first coil 1 and the direction of the magnetic flux generated by the current flowing through the second coil 3 are mutually weakened . Therefore, the magnetic flux due to the current flowing through the first coil 1 and the flux due to the current flowing through the second coil 3 coexist with each other and weaken each other. Therefore, the composite inductance GL is a value between the minimum value and the maximum value.

7 is a view showing the first coil 1 and the first support member 2 and the second coil 3 and the second support member 4 in the same direction. Specifically, FIG. 7 shows a view of a surface of the support member 2 opposite to the mounting surface of the first coil 1, viewed from above (toward the negative direction from the positive direction of the Z axis).

In Fig. 7, the moving holes 2a, 2b, 2c and 2d formed in the supporting member 2 and the supports 5a, 5b, 5c and 5d 2b, 2c, and 2d in the state where the bolts 6a, 6b, 6c, and 6d are fitted to the bolts 6a, 6b, 6c, Therefore, the first coil 1 and the first support member 2 can be rotated in a stepless manner.

7, with the rotation of the first coil 1 and the support member 2, the composite inductance GL becomes a value smaller than the maximum value. Therefore, the difference between the actual inductance value and the design value of the inductance generated due to the manufacturing error or the like can be easily corrected by fine adjustment. After the adjustment of the inductance is completed, the first coil 1 (1) is fixed to the first coil 1 (1) by using the supports 5a to 5d, the bolts 6a to 6d and the nuts 7a to 7d in order to fix the inductance of the reactor with the adjusted inductance. And the first support member 2 and the relative positions of the second coil 3 and the second support member 4 are fixed.

Next, the members constituting the first coil 1 and the second coil 3 will be described.

The conductors constituting the first coil 1 and the second coil 3 may be in any form. As a conductor constituting the first coil 1 and the second coil 3, for example, a water-cooled cable, an air-cooled cable, or a water-cooled copper tube can be used. When a cable is used as the conductor constituting the first coil 1 and the second coil 3, the number of electric wires in the cable may be one, or a plurality of electric wires (for example, . (For example, a current of 100 [A] or more) of a high frequency (several hundreds of Hz to several hundreds of kHz) is applied to (the electric wire of) the first coil 1 and the second coil 3, Preferably a current of 500 A or more). By flowing an alternating current through the first coil 1, the first main portion 1a and the second main portion 1b produce mutually opposite magnetic fields. Likewise, by flowing an alternating current through the second coil 3, the third main portion 3a and the fourth main portion 3b produce mutually opposite magnetic fields.

The first coil 1 is rotated to obtain a predetermined inductance value as the inductance value of the reactor and then the first coil 1 and the second coil 3 are wound around the bolts 6a to 6d and the nuts 7a- 7d are fixed to the first supporting member 2 and the second supporting member 4, respectively. The first lead portion 1d, the second lead portion 1e, the third lead portion 3d, the fourth lead portion 3e, and the fixed wiring from an AC power supply circuit (not shown) are connected to each other. For example, one of the wirings from the AC power supply circuit is connected to the second lead portion 1e, the first lead portion 1d and the third lead portion 3d are connected to each other, and the fourth lead portion 3e ) Is connected to the other wiring from the AC power source. In this case, the first coil 1 and the second coil 3 are electrically connected in series. In this way, the reactor is built into the electric circuit. The relative positions of the first coil 1 and the first support member 2 and the positions of the second coil 3 and the second support member 4 are set to be It is fixed and does not change.

As described above, in the present embodiment, the arc-shaped moving holes 2a, 2b, 2c and 2d are formed in the first supporting member 2 and the holes 4a to 4d ). The supports 5a, 5b, 5c and 5d and the bolts 6a, 6b, 6c and 6d are fixed to the moving holes 2a, 2b, 2c and 2d and the holes 4a, 4b, 4c and 4d, The first coil 1 mounted on the first supporting member 2 is rotated along the moving holes 2a, 2b, 2c, and 2d while being inserted. Using the supports 5a to 5d, the bolts 6a to 6d and the nuts 7a to 7d so that the coil surfaces of the first coil 1 and the second coil 3 become parallel, A first supporting member 2 for supporting the first coil 1 and a second supporting member 4 for supporting the second coil 3 are fixed.

Therefore, for example, by setting the design value of the inductance to be a value slightly smaller than the maximum value of the inductance GL, the first coil 1 is rotated to change the actual inductance value generated in manufacturing errors or the like, The difference from the value can be reduced. There is no need to change the shape, dimension and number of windings of the coils or to change the gap (gap) between the cores as in the prior art. Therefore, the inductance can be easily modified in a very short time. This leads to a significant cost reduction. Therefore, the inductance value of the manufactured and combined reactor can be adjusted simply and accurately to the target value. Further, the reactors manufactured in a common design and manufacturing process can be applied to a wide range of products (for example, power conversion circuits and resonant circuits) in various products, for example. Therefore, it is possible to realize a reactor in which the inductance can be easily changed widely for various types of specifications. Further, high-frequency high current can flow through the reactor. Further, the amount of rotation from the design origin of the first coil 1 at the time of adjusting the inductance may be large or small.

[Modified Example 1]

In the present embodiment, the first coil 1 and the second coil 3 of the first coil 1 and the second coil 3 are rotated to fix the second coil 3 as an example. However, if at least one of the first coil 1 and the second coil 3 is rotated, this is not necessarily required. For example, both the first coil 1 and the second coil 3 may be rotated. In this case, for example, the second support member 4 of the second coil 3 may be the same as the first support member 2 of the first coil 1.

[Modified example 2]

In this embodiment, movement holes 2a, 2b, 2c and 2d are formed so as to rotate the first coil 1 by 180 [deg.]. However, if the movable hole has a length that can cover a range for correcting the difference between the actual inductance value caused by the manufacturing error or the like and the design value of the inductance, this is not necessarily required. 8A and 8B are views showing a modified example of the moving hole. Specifically, FIG. 8A is a view corresponding to FIG. 2A, in which the mounting surface of the first coil 1 among the surfaces of the first supporting member 81 is viewed along the Z-axis. Fig. 8B is a view corresponding to Fig. 7, in which the surface of the first support member 81 on the opposite side to the installation surface of the first coil 1 is viewed from above (the definition of the Z axis In the drawing from the direction toward the negative direction).

As shown in Figs. 8A and 8B, four independent moving holes 81a to 81d may be formed in the first supporting member 81. [ The moving holes 81a to 81d have an arc shape shorter than the moving holes 2a, 2b, 2c and 2d. In such a case, the support 5a, the bolt 6a, the support 5b, the bolt 6b, the support 5c, the bolt 6c, the support 5d, and the bolt 6d, 81a, 81b, 81c and 81d are formed. In this case, the angle at which the first coil 1 rotates is smaller than 180 [deg.]. 8A and 8B, the second support member 4 is configured to rotate the second coil 3 in the same manner as in the first modified example can do.

Here, the absolute value of the rotation angle of the first coil 1 in the first direction (for example, clockwise) and the absolute value of the rotation angle of the second coil 3 in the second direction (opposite to the first direction, (I.e., the maximum value of the total can be set to be 180). In this case, the maximum value of the rotation angle in the counterclockwise direction can be set to 0 to 180 degrees. By rotating both the first coil 1 and the second coil 3 in this manner, the first state shown at the bottom of Fig. 4, the second state shown at the top of Fig. 4, Can be continuously obtained.

[Modification 3]

In this embodiment, movement holes 2a, 2b, 2c, and 2d are formed in the first support member 2 to rotate the first coil 1 as an example. However, if at least one of the first coil 1 and the second coil 3 is rotated, this is not necessarily required. For example, holes are formed at the positions of the centers 2g and 4g of the first and second support members 2 and 4, and the pivot shaft is inserted into the holes. At this time, the first support member 2 is connected to the rotation shaft directly or through a member, and the second support member 4 is not connected to the rotation shaft. In addition, it is possible to fix the rotation shaft at a desired rotation angle. Thus, only the first support member 2 out of the first support member 2 and the second support member 4 can be rotated to a desired rotation angle. After the first support member 2 is rotated to a desired rotation angle, the rotation shaft is fixed and the first coil 3 is prevented from rotating. In this case, the first coil 1 and the second coil 2 are arranged such that the first main portion 1a and the second main portion 1b and the third main portion 3a and the fourth main portion 3b are spaced apart and parallel to each other, A holding member for holding the second coil 3 and a holding member for holding the first coil 1 and the second coil 3 so that the first coil 1 does not rotate may be used as the holding members.

[Modification 4]

In the present embodiment, the case where the first coil 1 and the second coil 3 are connected in series has been described as an example. However, the first coil 1 and the second coil 3 may be connected in parallel. Concretely, one of the wirings from the AC power supply circuit is connected to both the first lead portion 1d and the third lead portion 3e, and the other lead from the AC power supply circuit is connected to the second lead portion 1e And the fourth lead portion 3d.

When the first coil 1 and the second coil 3 are connected in parallel, the maximum value of the composite inductance GL is expressed by the following formula (5).

GL = (L1 + M) x (L2 + M) / (L1 + L2 + 2M) ... (5)

The composite inductance GL expressed by the equation (5) becomes the maximum value of the combined inductance GL at the time of parallel connection. Therefore, as in the case of the series connection, by setting the design value to be slightly smaller than the maximum value of the composite inductance GL, the composite inductance GL after manufacture can be adjusted and fixed with high accuracy in a short time.

[Modified Example 5]

In the present embodiment, the case where the coil surfaces of the first coil 1 and the second coil 3 are parallel to each other in a state of having a constant gap G has been described as an example. However, it is not necessarily required to do so, and the gap G may be changed by moving at least one of the first coil 1 and the second coil 3 in the Z-axis direction. The smaller the gap G, the larger the mutual inductance M becomes. On the other hand, if the interval G is increased, the mutual inductance M becomes a small value.

9 is a view showing a configuration of a modified example of the reactor. 9 is a view corresponding to Fig. 9, the illustration of the first lead portion 1d, the second lead portion 1e, the third lead portion 3d and the fourth lead portion 3e is omitted. The spacers 12a and 12b between the support member 2 of the first coil 1 and the support member 4 of the second coil 3 are spaced apart from each other by the spacers 12a and 12b, 12b longer than the spacers 12c, 12b and the length between the support members 2, 4 is made longer. In this way, the gap G between the first coil 1 and the second coil 3 can be changed.

[Modified Example 6]

((Modified Example 6-1))

The shape formed by the first main portion, the second main portion, and the first connecting portion is not limited to the eight-figure shape of the Arabic numeral. Likewise, the shape formed by the third main portion, the fourth main portion, and the second connection portion is not limited to the eight-figure shape of the Arabic numeral. For example, FIGS. 10A and 10B may be used.

10A is a view showing a first modification of the first coil 101 and the first support member 102. Fig. Fig. 10B is a diagram showing a first modification of the second coil 103 and the second support member 104. Fig. Fig. 10A corresponds to Fig. 2A, and Fig. 10B corresponds to Fig. 2B.

The first support member 102 is a member for supporting the first coil 101. The first coil 101 is fixed to the first support member 102. As shown in Fig. 10A, holes 102a and 102b are formed in the first support member 102. As shown in Fig. The holes 102a and 102b correspond to the holes 2e and 2f shown in FIG. 2A and are holes for drawing out the first coil 101 to the outside. The first supporting member 102 has the holes 102a and 102b as the holes 2e and 2f with respect to the first supporting member 2 shown in Fig.

The first coil 101 includes a first main portion 101a, a second main portion 101b, a first connecting portion 101c, a first lead portion 101d, a second lead portion 101e, . The first main portion 101a, the second main portion 101b, the first connection portion 101c, the first lead portion 101d, and the second lead portion 101e are integrally formed.

The number of windings of the first coil 101 is 1 [times]. The first main portion 101a is a portion that circulates around the inner region. The second main take-over portion 101b is also a portion which circles around the inner main portion 101b. The first main portion 101a and the second main portion 101b are arranged on the same horizontal plane (X-Y plane).

The first connecting portion 101c is a portion that connects the first end 101f of the first main portion 101a and the first end 101g of the second main portion 101b and is a portion that does not circulate .

The first lead portion 101d is connected to the second end 101h of the first main portion 101a. The second end 101h of the first main portion 101a is located at the position of the hole 102b. The second lead portion 101e is connected to the second end 101i of the second main portion 101b. The second end 101i of the second main portion 101b is located at the position of the hole 102a.

The second support member 104 is a member for supporting the second coil 103. The second coil 103 is fixed to the second support member 104. As shown in Fig. 10B, holes 104a and 104b are formed in the second support member 104. Fig. The holes 104a and 104b are for the holes 4e and 4f and are holes for pulling out the second coil 103 to the outside. The second support member 104 has the holes 104a and 104b as the holes 4e and 4f with respect to the second support member 2 as shown in Fig. 2B.

The second coil 103 includes a third main portion 103a, a fourth main portion 103b, a second connecting portion 103c, a third lead portion 103d, a fourth lead portion 103e, . The third main portion 103a, the fourth main portion 103b, the second connecting portion 103c, the third lead portion 103d, and the fourth lead portion 103e are integrally formed.

The number of windings of the second coil 103 is 1 [times]. The third main portion 103a is a portion that circulates around the inner region. The fourth main portion 103b is also a portion that surrounds the inner region. The third main portion 103a and the fourth main portion 103b are arranged on the same horizontal plane (X-Y plane).

The second connecting portion 103c is a portion that connects the first end 103f of the third main portion 103a to the first end 103g of the fourth main portion 103b and is a portion that does not circulate .

The third lead portion 103d is connected to the second end 103h of the third main portion 103a. The second end 103h of the third main portion 103a is located at the position of the hole 104a. The fourth lead portion 103e is connected to the second end 103i of the fourth main portion 103b. The second end 103i of the fourth main portion 103b is located at the position of the hole 104b.

The contour of the outermost periphery of the first main portion, the second main portion, the third main portion and the fourth main portion may be in a different shape (for example, a circle, an ellipse, or a rectangle).

((Modified Example 6-2))

The connection of the first main portion and the second main portion and the connection of the third main portion and the fourth main portion are not limited to the connections shown in Figs. 2A and 2B. That is, the direction of the alternating current flowing through the first main portion and the second main portion and the direction of the alternating current flowing through the third main portion and the fourth main portion are not limited to the directions shown in Figs. 2A and 2B.

11A is a view showing a second modification of the first coil 111 and the first support member 112. Fig. 11B is a view showing a second modification of the second coil 113 and the second support member 114. Fig. Fig. 11A corresponds to Fig. 2A, and Fig. 11B corresponds to Fig. 2B.

The first support member 112 is a member for supporting the first coil 111. The first coil 111 is fixed to the first support member 112. As shown in Fig. 11A, the first support member 112 is provided with holes 112a and 112b. The holes 112a and 112b correspond to the holes 2e and 2f shown in FIG. 2A and are holes for pulling out the first coil 111 to the outside. The first supporting member 112 has the holes 2e and 2f as the holes 112a and 112b with respect to the first supporting member 2 shown in Fig. 2A.

The first coil 111 includes a first main portion 111a, a second main portion 111b, a first connecting portion 111c, a first lead portion 111d, a second lead portion 111e, . The first main portion 111a, the second main portion 111b, the first connecting portion 111c, the first lead portion 111d and the second lead portion 111e are integrally formed.

The number of windings of the first coil 111 is 1 [times]. The first main portion 111a is a portion that circulates around the inner region. The second main take-out portion 111b is also a portion that circulates around the inner main portion 111b. The first main portion 111a and the second main portion 111b are arranged on the same horizontal plane (X-Y plane).

The first connecting portion 111c is a portion that connects the first end 111f of the first main portion 111a and the first end 111g of the second main portion 111b to each other and is a portion that does not circulate .

The first lead portion 111d is connected to the second end 111h of the first main portion 111a. The second end 111h of the first main portion 111a is located at the position of the hole 112b. The second lead portion 111e is connected to the second end 111i of the second main lead portion 111b. The second end 111i of the second main portion 111b is located at the position of the hole 112a.

The second support member 114 is a member for supporting the second coil 113. The second coil 113 is fixed to the second support member 114. As shown in Fig. 11B, holes 114a and 114b are formed in the second support member 114. Fig. The holes 114a and 114b are for the holes 4e and 4f and are holes for drawing out the second coil 113 to the outside. The second support member 114 has the holes 4e and 4f as the holes 114a and 114b with respect to the second support member 2 shown in Fig. 2B.

The second coil 113 includes a third main portion 113a, a fourth main portion 113b, a second connection portion 113c, a third lead portion 113d, a fourth lead portion 113e, . The third main portion 113a, the fourth main portion 113b, the second connection portion 113c, the third lead portion 113d, and the fourth lead portion 113e are integrally formed.

The third main portion 113a is a portion that circulates around the inner area. The fourth main inclined portion 113b is also a portion that circulates around the inner area. The third main portion 113a and the fourth main portion 113b are disposed on the same horizontal plane (X-Y plane).

The second connecting portion 113c is a portion that connects the first end 113f of the third main portion 113a and the first end 113g of the fourth main portion 113b to each other .

The third lead portion 113d is connected to the second end 113h of the third main portion 113a. The second end 113h of the third main portion 113a is located at the position of the hole 114a. The fourth lead portion 113e is connected to the second end 113i of the fourth main portion 113b. And the second end 113i of the fourth main portion 113b is located at the position of the hole 114b.

2A and 2B, a current flows counterclockwise in the first main section 1a at the same time toward the paper surface of Figs. 2A and 2B. In the second main section 1b, A current flows in a clockwise direction, a current flows in a clockwise direction in the third main section 3a, and a counterclockwise flow in the fourth main section 3b. Therefore, the directions of the currents flowing in the two main turns (the first main portion 1a and the second main portion 1b, the third main portion 3a and the fourth main portion 3b) are opposite to each other.

On the other hand, in the configuration shown in Figs. 11A and 11B, current flows clockwise in the first main portion 111a and the second main portion 111b at the same time toward the paper surface of Figs. 11A and 11B Current flows in the clockwise direction in the third main portion 113a and the fourth main portion 113b. Therefore, the directions of the currents flowing in the two main turns (the first main portion 111a and the second main portion 111b, the third main portion 113a, and the fourth main portion 113b) are the same direction 11A and 11B, the arrows indicated by the side of the first coil 111 and the second coil 113). The variable magnification? Viewed from the AC power source circuit of the composite inductance GL shown in Figs. 11A and 11B is different from that shown in Figs. 2A and 2B, but the principle of changing the composite inductance GL is as shown in Fig. , Fig. 2B, Figs. 11A and 11B.

(Second Embodiment)

Next, a second embodiment will be described. In the first embodiment, the case where the first coil 1 is rotated is described as an example. On the other hand, in the present embodiment, the case where the first coil 1 is moved in the direction perpendicular to the Z-axis (along the coil surface of the first coil 1) is described as an example. Verticals also do not have to be strictly vertical, and can be said to be vertical if they are within the tolerance of design, for example. This also applies to &quot; vertical &quot; in the following description. As described above, in the present embodiment and the first embodiment, a part of the structure for moving the first coil 1 is mainly different. Therefore, in the description of this embodiment, the same portions as those in the first embodiment are denoted by the same reference numerals as those in Figs. 1 to 11B, and detailed description thereof is omitted.

The difference between the present embodiment and the first embodiment is a moving hole formed in the first supporting member 2.

12A is a diagram showing an example of the configuration of the first support member 121 of the present embodiment. Fig. 12A is a view corresponding to Fig. 2A. 12A is a view of the mounting surface of the first coil 1 among the surfaces of the first supporting member 121 viewed along the Z axis. 12B is a view showing the first coil 1 and the first support member 121 and the second coil 3 and the second support member 4 viewed in the same direction. Fig. 12B is a view corresponding to Fig. 7. Fig. 12B is a plan view of the surface of the first support member 121 opposite to the mounting surface of the first coil 1 from above and showing a view from the positive direction of the Z axis toward the negative direction ).

12A, the moving holes 121a to 121d are formed in a track shape in which the longitudinal direction (Y-axis direction in FIG. 12) is parallel to each other (a shape in which a short side is projected outward in a semi- ). The shape and size of the moving holes 121a to 121d are the same. The positions of the moving holes 121a and 121b in the Y-axis direction and the position in the Z-axis direction are the same and the positions in the X-axis direction are different. The position of the moving holes 121c and 121d in the Y-axis direction and the position in the Z-axis direction are the same and the positions in the X-axis direction are different. Further, the positions of the movement holes 121a and 121c in the X-axis direction and the position in the Z-axis direction are the same and the positions in the Y-axis direction are different. The positions of the moving holes 121b and 121d in the X-axis direction and the Z-axis are the same, and the positions in the Y-axis direction are different. The moving holes 121a to 121d are formed so that the supports 5a, 5b, 5c and 5d and the bolts 6a, 6b, 6c and 6d inserted in the moving holes 121a, 121b, 121c and 121d are parallel And has a movable size and shape. Also, the shape, size, and position need not be exactly the same, and may be said to be the same, for example, within the tolerance of design.

121b, 121c, and 121d formed in the first support member 121 provided with the first coil 1 and movable holes 121a, 121b, 121c, and 121d 121b, 121c, and 121d in the state where the bolts 6a, 6b, 6c, and 6d are fitted to the supports 5a, 5b, 5c, (1) and the first support member (121) can be moved in a stepless manner in parallel. In Fig. 12B, the supports 5a, 5b, 5c and 5d are located below the bolts 6a, 6b, 6c and 6d (on the negative direction side of the Z axis). Thus, the support 5a, the bolt 6a, the support 5b, the bolt 6b, the support 5c, the bolt 6c, the support 5d, and the bolt 6d, , 121b, 121c, and 121d are formed. Therefore, as shown in Fig. 12B, the first support member 121 provided with the first coil 1 moves in parallel in the Y-axis direction.

In Fig. 12B, with the parallel movement of the first coil 1 and the first support member 121, the composite inductance GL becomes a value smaller than the maximum value. Therefore, it is possible to easily correct the difference between the actual inductance value generated due to manufacturing errors and the design value of the inductance by fine adjustment. After the adjustment of the inductance is finished, the first support member 121 (the first support member) 121a, the second support member 121b, and the third support member 122b are fixed by using the supports 5a through 5d, the bolts 6a through 6d, and the nuts 7a through 7d in order to fix the inductance of the reactor with the adjusted inductance. And the second support member 4 are fixed. In this embodiment, the supports 5a to 5d, 12a and 12b, the bolts 6a to 6d and the nuts 7a to 7d function as holding members. In the present embodiment, the holding member is configured such that, in a state in which the first main portion 1a and the second main portion 1b and the third main portion 3a and the fourth main portion 3b are spaced apart and parallel to each other, The first coil 1 and the second coil 3 are held such that the first coil 1 whose position is adjusted by the parallel movement does not move.

13 is a diagram showing an example of the positional relationship between the first coil 1 and the second coil 3. As shown in Fig. Fig. 13 is a view corresponding to the lowest drawing of Fig. 4; Fig. An example of the arrangement of the first coil 1 and the second coil 3 when the combined inductance GL becomes the minimum value and the maximum value is the same as the top view in Fig. 4 and the center view in Fig. 4 .

13, when the first coil 1 is fixed by moving in parallel in the Y-axis direction, the coil surface of the first coil 1 and the coil surface of the second coil 3, The direction of the magnetic flux generated by the current flowing through the first coil 1 and the direction of the magnetic flux generated by the current flowing through the second coil 3 are strengthened with each other. On the other hand, in the portion indicated by (surface 2), the direction of the magnetic flux generated by the current flowing through the first coil 1 and the direction of the magnetic flux generated by the current flowing through the second coil 3 are mutually weakened . Therefore, the magnetic flux generated by the current flowing through the first coil 1 and the magnetic flux generated by the current flowing through the second coil 3 coexist with each other and weaken each other. Therefore, the composite inductance GL is a value between the minimum value and the maximum value.

As described above, the same effect as that of the first embodiment can be obtained even if the first coil 1 is moved parallel to the second coil 3.

Also in the present embodiment, modifications of Modifications 1 and 3 to 6 described in the first embodiment can be employed. 12A and 12B, if the length of the movable inductance is equal to or larger than the effective inductance value of the inductance, (121a to 121d). For example, two moving holes may be formed in the first supporting member, namely, a moving hole connecting the moving holes 121a and 121c and a moving hole connecting the moving holes 121b and 121d. Even if the first coil 1 is moved in parallel and the second coil 3 is rotated by changing the second support member 4 to the first support member 2 described in the first embodiment do.

Further, in the present embodiment, the first coil 1 and the second coil 3 do not rotate. In this embodiment, the first coil 1 and the second coil 3 are rotated in the same manner as in the first embodiment, and the first main portion 1a, the second main portion 1b, the third main portion 1a, The regulations described in the first embodiment are applied to the shape and size of the main stem portion 3a and the fourth main stem portion 3b.

(Third Embodiment)

Next, a third embodiment will be described. In the first embodiment, the case where the first coil 1 is rotated is described as an example, and in the second embodiment, the case where the first coil 1 is moved in parallel has been described as an example. On the other hand, in the present embodiment, a case of realizing both the turning and the parallel movement of the first coil 1 will be described as an example. As described above, in this embodiment and the first to second embodiments, a part of the constitution for moving the first coil 1 is mainly different. Therefore, in the description of this embodiment, the same parts as those in the first to second embodiments are denoted by the same reference numerals as those in Figs. 1 to 13, and detailed description thereof is omitted.

The difference between the present embodiment and the first to second embodiments is a moving hole formed in the first supporting member 2.

14 is a view showing an example of the configuration of the first coil 1 and the first support member 141 of the present embodiment. Fig. 14 is a view corresponding to Fig. 2A, in which the mounting surface of the first coil 1 among the surfaces of the first supporting member 141 is viewed along the Z axis.

As shown in Fig. 14, the moving holes 141a, 141b, 141c, and 141d have circular arc regions 142a, 142b, 142c, and 142d and projected regions 143a, 143b, 143c, . The moving holes 141a, 141b, 141c and 141d are formed by combining the moving holes 2a, 2b, 2c and 2d described in the first embodiment and the moving holes 121a, 121b, 121c and 121d described in the second embodiment It is. However, the portions overlapping with the moving holes 121a, 121b, 121c and 121d are excluded from the regions of the moving holes 2a, 2b, 2c and 2d.

141a, 141b, 141c, 141d formed in the first support member 141 provided with the first coil 1 and supports 5a (141a, 141b, 141c, 141d) 142b, 142c, and 142d of the moving holes 141a, 141b, 141c, and 141d in the state where the bolts 6a, 6b, 6c, and 6d are fitted, The first coil 1 and the first supporting member 141 are rotatable.

The first support member 141 is supported by the projections 143a, 143b, 143c, and 143d in the state that the supports 5a, 5b, 5c, and 5d and the bolts 6a, 6b, 6c, The first coil 1 and the first supporting member 141 can be moved in parallel by moving along the protruding regions 143a, 143b, 143c, and 143d. In this embodiment, the supports 5a to 5d, 12a and 12b, the bolts 6a to 6d and the nuts 7a to 7d function as holding members. In the present embodiment, the holding member is configured such that, in a state in which the first main portion 1a and the second main portion 1b and the third main portion 3a and the fourth main portion 3b are spaced apart and parallel to each other, The first coil 1 and the second coil 3 are held such that the first coil 1 whose position is adjusted by both or both of the rotation and the parallelism does not move.

As described above, the same effects as those of the first and second embodiments can be obtained even if the first coil 1 is rotated and moved parallel to the second coil 3. In this way, the adjustment range of the inductance value of the reactor can be further expanded. Also in this embodiment, various modifications described in the first to second embodiments can be employed.

(Fourth Embodiment)

Next, a fourth embodiment will be described. In the first to third embodiments, the case where the number of turns of the first coil 1 and the number of turns of the second coil 3 are once is described as an example. On the other hand, in the present embodiment, a case where the number of windings of the first coil and the second coil is plural times will be described. In this embodiment and the first to third embodiments, the number of windings of the first coil and the second coil is mainly different. Therefore, in the description of the present embodiment, the same portions as those in the first embodiment are denoted by the same reference numerals as those in Figs. 1 to 14, and detailed description thereof is omitted.

&Lt; Example 1 >

15 is a diagram showing a first example of the structure of the reactor of the present embodiment. Fig. 15 is a view corresponding to Fig. 16A is a diagram showing an example of the configuration of the first coil 151 and the first support member 2. Fig. 16B is a view showing an example of the configuration of the second coil 152 and the second support member 4. As shown in Fig. Figs. 16A and 16B are views corresponding to Figs. 2A and 2B, respectively.

In this example, as shown in Figs. 15, 16A and 16B, the number of turns of the first coil 151 and the number of turns of the second coil 152 are two, and the number of turns is the same. As shown in Figs. 15, 16A and 16B, the first coil 151 and the second coil 152 have the shape of a flat wire. Here, the flat winding refers to winding the coil a plurality of times along the direction parallel to the coil surface, as shown in Figs. 15, 16A, and 16B

When the first coil 151 and the second coil 152 are arranged so as to be parallel to each other with the gap G therebetween, the coil width W shown in Fig. 15 is widened . The coil width W is a length of a conductor group adjacent to each other when the coil is constituted, in a direction parallel to the coil surface (X-axis direction in Fig. 15). When the gap G is the same, the wider the coil width W, the more difficult the magnetic flux passes through the gap G, and the larger the magnetoresistance. Accordingly, the mutual inductance M of the first coil 151 and the second coil 152 becomes large. Also in this embodiment, by rotating the first coil 151 in the same manner as described in the first embodiment, the difference between the actual inductance value generated due to the manufacturing error or the like and the design value of the inductance is reduced .

As described above, the same effect as that of the first embodiment can be obtained even if the first coil 151 and the second coil 152 are formed into a flat-rolled shape and a plurality of winding turns are performed.

<Example 2>

17 is a diagram showing a second example of the structure of the reactor of the present embodiment. 17 is a view corresponding to Fig. 18A is a diagram showing an example of the configuration of the first coil 171 and the first support member 2. Fig. 18B is a diagram showing an example of the configuration of the second coil 172 and the second support member 4. As shown in Fig. Figs. 18A and 18B are views corresponding to Figs. 2A and 2B, respectively.

In this example, as shown in Figs. 17, 18A and 18B, the number of turns of the first coil 171 and the number of turns of the second coil 172 are two, and the number of turns is the same. 17, 18A and 18B, the shapes of the first coil 171 and the second coil 172 are made to have a constant winding shape. 17, Fig. 18A and Fig. 18B, it means that the coil is wound a plurality of times along the direction perpendicular to the coil face (the Z-axis direction in Fig. 17).

In the case of the longitudinal winding configuration, the coil width W is the same as that in the case where the number of windings is one.

When the number of windings is the same, the mutual inductance M between the two coils becomes smaller than that of the coil winding shape. However, the method of adjusting the inductance as the reactor does not change in the shape of the flat wire and the wire in the longitudinal direction.

As described above, an effect similar to that of the first embodiment can be obtained even if the first coil 171 and the second coil 172 are formed in a longitudinally wound configuration and a plurality of winding turns are performed.

<Modifications>

In the present embodiment, the case where the number of windings is two has been described as an example. However, the number of windings is not limited to two, and may be three or more. The number of windings may be determined according to the size of the reactor, the size of the composite inductance GL, the cost of the reactor, and the like. In this embodiment, the number of turns of the first coil 151 and the number of turns of the second coil 152 are the same, and the number of turns of the first coil 171 and the number of turns of the second coil 172 are The same case has been described as an example. However, the number of windings may be different.

In this embodiment, the case where the first coils 151 and 171 and the second coils 152 and 172 are applied to the first support member 2 described in the first embodiment is shown as an example. However, for example, with respect to the first support members 81, 121, and 141 described in the second, the second, or the third embodiment of the first embodiment, the first and second coils 151 and 171 and the second The coils 152 and 172 may be applied. The method of the present embodiment may be applied to the first coils 101 and 111 and the second coils 103 and 113 described in the sixth modification of the first embodiment.

Also in this embodiment, various modifications described in the first to third embodiments can be employed.

(Fifth Embodiment)

Next, a fifth embodiment will be described. In the first to fourth embodiments, two support members (for example, the first support member 2 and the second support member 4) each provided with one coil are arranged parallel to each other such that the distance between the coils is G As shown in FIG. On the other hand, in the present embodiment, a case where a plurality of coils are provided on one support member (for example, the first support member 2 and the second support member 4) will be described as an example. As described above, the present embodiment and the first to fourth embodiments mainly differ from each other in that the number of coils provided in one support member is different. Therefore, in the description of this embodiment, the same parts as those in the first to fourth embodiments are denoted by the same reference numerals as those in Figs. 1 to 18, and detailed description thereof is omitted.

19A is a diagram showing an example of the configuration of the first coils 191a and 191b and the first support member 192. Fig. Fig. 19B is a diagram showing an example of the configurations of the second coils 193a and 193b and the second support member 194. Fig.

The first coils 191a and 191b are arranged on the first support member 192 in such a state that the central portions of these coil surfaces (eight-shaped portions) overlap each other and the coil surfaces are deviated by exactly 90 [deg.] . That is, the first coils 191a and 191b pass through the center of the first support member 192 and are disposed symmetrically about the axis perpendicular to the plane of the first support member 192, .

Likewise, the second coils 193a and 193b are arranged on the second support member 194 in such a state that the central portions of these coil surfaces (eight-shaped portions) overlap each other and the coil surfaces are deviated by exactly 90 [deg. . That is, the first coils 193a and 193b pass through the center of the second support member 194 and are disposed symmetrically about an axis perpendicular to the plane of the second support member 194, As shown in FIG.

When the first coils 191a and 191b and the first support member 192 are disposed as described in the first embodiment or the like, the first coils 191a and 191b and the second coils 193a and 193b The coil surfaces of the first coils 191a and 191b and the second coils 193a and 193b (the surfaces of the first and second support members 192 and 194) are parallel do. The interval G may be constant or variable.

The first support member 192 is formed with holes 192a and 192b for allowing the first coil 191a to be mounted on the first support member 192 and the first coil 191b is formed on the first support member 192, Holes 192c, 192d, 192e, and 192f are formed so as to be installed in the base 192. The holes 192e and 192f are formed so that the first coil 191b overlaps the first coil 191a so that the first coils 191a and 191b do not interfere with each other on the plane shown in Fig. And is disposed on the side opposite to the one shown in the drawing. 19A, movement holes 192g to 192j for moving the first support member 192 in parallel are formed in the first support member 192 to adjust the inductance value of the reactor . The moving holes 192g to 192j have the same role as the moving holes 121a to 121d shown in Figs. 12A and 12B.

Holes 194a and 194b are formed in the second support member 194 so that the second coil 193a is mounted on the second support member 194 and the second coil 193b is formed on the second support member 194. [ Holes 194c, 194d, 194e, and 194f are formed so as to be installed on the base plate 194. The holes 194e and 194f are formed in such a manner that a portion overlapping the second coil 193a of the second coil 193b is formed so as to prevent the second coils 193a and 193b from interfering with each other on the plane shown in Fig. And is located on the surface opposite to the one shown in the drawing. The second support member 194 is formed with holes 194g to 194j for allowing the second coils 193a and 193b to be mounted on the second support member 194. [ The holes 194g to 194j have the same role as the holes 4a to 4d shown in Fig. 2B.

As described above, even if a plurality of coils 191a, 191b, 193a, and 193b are provided on one support member (the first support member 192 and the second support member 194), the same effects as those of the first embodiment Is obtained. In this case, the adjustment range of the inductance value of the reactor can be further expanded.

<Modifications>

In the present embodiment, the case where the first coils 191a and 191b and the second coils 193a and 193b are arranged to be shifted by 90 [deg.], Respectively, has been described as an example. However, the number of the first coils and the number of the second coils may be three or more. The number of the first coils is N and the number of the second coils is N (N is an integer of 2 or more). The angle at which the N coils are arranged is shifted by 90 / (N / 2) [DEG]. Then, the synthetic inductance GL of the N first coils and the N second coils can be adjusted and adjusted by the theory of adjustment of the synthetic inductance GL described with reference to Fig.

In the present embodiment, the first support member 192 provided with the plurality of first coils 191a and 191b is moved in parallel. However, as described in the first embodiment, the first support member provided with the plurality of first coils may be rotated. Further, as described in the third embodiment, the first support member provided with the plurality of first coils may be rotated and moved in parallel. Also in this embodiment, various modifications described in the first to fourth embodiments can be employed. The first coils 191a and 191b and the second coils 193a and 193b may be connected to each other in series or partially connected in parallel.

(Example)

Next, an embodiment will be described.

&Lt; Example 1 >

In this embodiment, the reactor of the first example of the fourth embodiment was used.

The shapes of the first coil 151 and the second coil 152 are the shapes shown in Fig. The length of the first main portion 151a and the length of the second main portion 151b of the first coil 151 was 400 mm and the length of the short side was 200 mm. The length of the third main portion 152a and the fourth main portion 152b of the second coil 152 in the longitudinal direction is 400 mm and the length in the short direction is 200 mm.

The first coil 151 and the second coil 152 are made of a 45sq Litz wire passed through the hose. The first coil 151 and the second coil 152 are the same. The first coil 151 and the second coil 152 are connected in series.

The first coil 151 was relatively rotated with respect to the second coil 152 while the second coil 152 was fixed, and the rotation angle was adjusted. A high frequency current of 20 [kHz] and 1000 [A] is caused to flow through the first coil 151 and the second coil 152 in the state where the first coil 151 is held at the respective rotation angles, And the power loss of the reactor were measured.

When the first coil 151 is relatively rotated with respect to the second coil 152 while the second coil 152 is fixed, the inductance GL can be changed and the inductance can be finely adjusted Respectively.

When the first coil 151 is relatively rotated with respect to the second coil 152 while the second coil 152 is fixed, the reason why the combined inductance GL becomes the minimum value is that the first inductor 151 of the first coil 151, The first main coil 151a and the fourth main coil 152b of the second coil 152 overlap each other and the second main coil 151b of the first coil 151 and the third main coil 152b of the second coil 152 overlap each other, (See the state shown in the uppermost drawing in Fig. 4). The inductance value of the reactor in this case was 4.0 [mu] H and the power loss of the reactor was 8.1 [kW].

On the other hand, when the first coil 151 is relatively rotated with respect to the second coil 152 while the second coil 152 is fixed, the maximum value of the combined inductance GL is the first The main turns 151a and the third main turns 152a of the second coil 152 overlap each other and the second main turns 151b of the first coil 151 and the fourth main turn 151a of the second coil 152 overlap each other, And the main turn portions 152b overlap each other (see the state shown in the lower drawing of Fig. 4). The inductance value of the reactor in this case was 13.5 [μH]. In addition, the power loss of the reactor was 8.0 [㎾], and there was almost no change from the case where the synthetic inductance GL was the minimum value.

It was confirmed that the inductance value of the reactors manufactured and combined can be adjusted simply and accurately to the target value by the verification test results shown in the first embodiment. In the case of designing and manufacturing three different reactors with the conventional inductance specifications of, for example, 5 [μH], 8 [μH], and 12 [μH], three different reactors are designed and manufactured, , It was necessary to adjust the produced reactor. On the other hand, in this embodiment, reactors of different specifications of 5 [μH], 8 [μH], and 12 [μH] can be realized by adjusting at the time of shipment only by designing and manufacturing one reactor Thus, it is confirmed that the design and manufacturing process can be greatly reduced in cost.

The first coil 151 and the second coil 152 of the first example of the fourth embodiment are applied to the support member 121 of the second embodiment shown in Figs. 12A and 12B, Even when the first coil 151 is relatively moved parallel to the second coil 152 while the first coil 151 is fixed and the synthetic inductance GL changes and the amount of movement thereof is adjusted, fine adjustment of the inductance is possible Respectively.

&Lt; Example 2 >

In this embodiment, the number of windings of the first coils 191a and 191b and the second coils 193a and 193b of the fifth embodiment is five, and the second coils 193a and 193b are fixed, A reactor capable of rotating the coils 191a and 191b was manufactured. The shapes of the first coil and the second coil are the shapes shown in Figs. 19A and 19B (provided that the shapes of the first coil and the second coil are the shape of a flat wire).

The lengths of the main turns (the first main portion, the second main portion, the third main portion, and the fourth main portion) of the first coil and the second coil were set to about 400 [mm].

The first coil and the second coil were passed through a hose with a 45sq Litz wire. The first coils 191a and 191b and the second coils 193a and 193b are the same. All the coils were connected in series.

With respect to the second coil, the first coil was relatively rotated and the position of the first coil was adjusted to the position where the composite inductance GL was the maximum value, and the first coil was fixed at the position. A high frequency current of 20 [㎑] and 500 [A] was applied to the reactor thus constructed.

The inductance of the reactor was measured, and the time required to adjust the position of the first coil was one hour. The maximum value of the synthetic inductance GL was 51.5 [μH], and the power loss of the reactor was 7.2 [㎾].

According to the results of the inventors, when a reactor of 20 [㎑], 500 [A], and 50 [μH] is newly manufactured in a high frequency reactor in which the core described in Patent Document 2 is included and the same specifications as those of the reactor of this embodiment, After the manufacture, the energization test, and the measurement of the inductance, the inductance of the reactor is adjusted to the target value. For this reason, there is a need for a step of disassembling the device once and then increasing or decreasing the gap of the core, reassembling, conducting the energization test, and remeasuring the inductance.

Even if the disassembly and reassembly of the reactor were completed only once, a process of at least one day was required. On the other hand, in the present embodiment, as described above, after manufacturing the reactor, the inductance of the reactor can be adjusted to the target value in one hour, and the cost saving effect by the drastic shortening of the process of adjusting the inductance of the reactor was confirmed .

It should be noted that the embodiments and examples of the present invention described above are merely examples of implementation in the practice of the present invention, and the technical scope of the present invention should not be construed to be limited thereto. That is, the present invention can be carried out in various forms without departing from the technical idea or the main features thereof.

INDUSTRIAL APPLICABILITY The present invention can be used for an electric circuit having an inductive load or the like.

Claims (10)

The inductance as a constant of an electric circuit is a variable reactor,
A first main winding portion, a second main winding portion, a first coil having a first connecting portion,
A second main coil having a third main coil portion, a fourth main coil portion, a second connecting portion,
A first support member for supporting the first coil,
A second support member for supporting the second coil,
And a holding member for holding the first coil and the second coil,
The first main portion, the second main portion, the third main portion, and the fourth main portion are each a portion that circles around the inner area,
The first connecting portion is a portion connecting one end of the first main take-up portion and one end of the second main take-up portion to each other,
The second connecting portion is a portion connecting one end of the third main take-up portion and one end of the fourth main take-up portion to each other,
Wherein the first coil and the second coil are connected in series or in parallel,
The first main portion and the second main portion are on the same plane,
The third main portion and the fourth main portion are on the same plane,
Wherein the first main portion and the second main portion, the third main portion, and the fourth main portion are arranged in parallel with an interval,
Either or both of the first coil and the second coil may be either rotated by turning the axes of the first coil and the second coil with the rotation axis and being moved in parallel to the direction perpendicular to the axis ,
The axis passing through an intermediate position between the center of the first main turning part and the center of the second main turning part and a middle position between the center of the third main turning part and the center of the fourth main turning part,
The holding member may be configured such that the first main portion and the second main portion and the third main portion and the fourth main portion are parallel to each other with an interval and that both or both of the rotation and the parallel movement are performed And one or a plurality of members for preventing the first coil and the second coil from moving. The method according to claim 1,
A moving hole is formed on either or both of the first supporting member and the second supporting member,
The holding member is inserted into the moving hole,
Wherein the moving hole has a size and a shape such that the holding member inserted into the moving hole can move in a direction parallel to a plane perpendicular to the axis,
Wherein either one of the first supporting member and the second supporting member is moved by the movement of the holding member inserted into the moving hole. 3. The method of claim 2,
A plurality of moving holes are formed on either or both of the first supporting member and the second supporting member,
The shape of the plurality of moving holes is an arc shape,
And the first support member and the second support member are rotated by the movement of the holding member inserted into the moving hole. 4. The method according to any one of claims 1 to 3,
Both or either of the first coil and the second coil are allowed to rotate in a stepless manner so that both states of the first state and the second state can be taken,
The first state is a state in which the first coil and the second coil overlap each other such that the directions of the magnetic fields generated from the first coil and the second coil are equal to each other,
Wherein the second state is a state in which the first coil and the second coil overlap each other such that directions of magnetic fields generated from the first coil and the second coil are opposite to each other. 5. The method according to any one of claims 1 to 4,
Wherein either or both of the first coil and the second coil are capable of both the rotation and the parallel movement. 6. The method according to any one of claims 1 to 5,
Wherein the shape and size of the first main portion, the second main portion, the third main portion, and the fourth main portion are the same at a portion of 60% or more of the total length. 7. The method according to any one of claims 1 to 6,
The directions of the magnetic fields generated from the first main portion and the second main portion are opposite to each other,
And the directions of the magnetic fields generated from the third main portion and the fourth main portion are opposite to each other. 8. The method according to any one of claims 1 to 7,
And the number of windings of the first coil and the second coil is two or more times. 9. The method according to any one of claims 1 to 8,
A plurality of first coils and a plurality of second coils,
And the plurality of first coils and the plurality of second coils are connected in series or in parallel. 10. The method according to any one of claims 1 to 9,
Wherein the first supporting member, the second supporting member, and the holding member have an insulating property and a non-magnetic property.

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